<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">{{this.currentCity}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div
                        class="button-wrapper"
                        v-for="item of hotCities"
                        :key="item.id"
                        @click="handleCityClick(item.name)"
                    >
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area"
                 v-for="(item,key) of cities"
                 :key="key"
                 :ref="key"
            >
                <div class="title border-topbottom">
                    {{key}}
                </div>
                <div class="item-list"
                     v-for="city of item"
                     :key="city.id"
                     @click="handleCityClick(city.name)"
                >
                    <div class="item border-bottom">{{city.name}}</div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>

    import BScroll from 'better-scroll'
    import {mapState,mapMutations} from 'vuex'

    export default {
        name: "List",
        props: {
            hotCities: Array,
            cities: [Object,Array],
            letter: String,
        },
        mounted(){
            this.scroll = new BScroll(this.$refs.wrapper)
        },
        watch: {
            letter(){
                if(this.letter){
                    const element = this.$refs[this.letter][0];
                    this.scroll.scrollToElement(element);
                }
            }
        },
        methods:{
            handleCityClick(city){
                this.changeCity(city);
                this.$router.push('/')
            },
            ...mapMutations(['changeCity'])
        },
        computed: {
            ...mapState({
                currentCity: 'city'
            })
        }
    }
</script>

<style lang="stylus" scoped>
    @import "~@/assets/vavibles.styl"
    .border-topbottom
        &:before
            border-color #ccc
        &:after
            border-color #ccc
    .border-bottom
        &:before
            border-color #ccc
    .list
        overflow hidden
        position absolute
        top 1.58rem
        left 0
        right 0
        bottom 0
        .title
            line-height .54rem
            font-size .26rem
            padding-left .2rem
            color #666
            background #eee
        .button-list
            padding .1rem .6rem .1rem .1rem
            overflow hidden
            .button-wrapper
                float left
                width 33.33%
                .button
                    text-align center
                    border .02rem solid #ccc
                    border-radius .06rem
                    padding .1rem 0
                    margin .1rem
        .item-list
            color #666
            padding-left .2rem
            line-height .76rem

</style>
